Communications: radio wave antennas – Antennas – With electrical shield
Patent
1985-03-20
1990-07-31
Hille, Rolf
Communications: radio wave antennas
Antennas
With electrical shield
343912, 343753, H01Q 1514
Patent
active
049453629
ABSTRACT:
A construction for shielding an item against interference from a microwave radio frequency radiation is disclosed, having a wall structure adapted to minimize radio frequency interference in the vicinity of an antenna. The wall is composed of a plurality of modular wall panels, each having a layer of electrically conductive materials that substantially reflects interfering electromagnetic microwave signals. The wall structure includes a top construction creating a thin, horizontal gap in the conductive material at the wall's top that acts to control diffraction over the wall. In the preferred embodiment, the layer of electrically conductive material is a mesh of expanded metal embedded in the wall modules. The gap comprises the space between the top of the mesh and a pair of vertically adjustable metal strips mounted on the wall. In the preferred embodiment, the wall panels are precast concrete that may be horizontally positioned with a joint allowing up to 180.degree. of relative movement.
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Hille Rolf
The Reinforced Earth Company
Wimer Michael C.
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